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CDX-GT270MP/GT274MP/GT277ME/GT320MP
28
• IC Pin Function Description
MAIN BOARD IC501 R5F3650KCDZ99FA (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
LCD_SO
O
Serial data output to the liquid crystal display driver
2
LCD_CLK
O
Serial clock signal output to the liquid crystal display driver
3
NOSE_SW
I
Front panel remove/attach detection signal input terminal “L”: Front panel is attached
4
SIRCS
I
Remote control signal input from the remote control signal receiver
5 to 7
NCO
-
Not used
8
BYTE
I
External data bus width select signal input Fixed at “L” in this set
9
CNVSS
I
Flash write signal input terminal Normally operation: “L”, Flash write: “H”
10
XIN
I
Low speed system clock signal input terminal (32.768 kHz)
11
XOUT
O
Low speed system clock signal output terminal (32.768 kHz)
12
RESET
I
System reset signal input from the reset signal generator “L”: reset
13
OSCOUT
O
High speed system clock signal output terminal (7.92 MHz)
14
VSS
-
Ground terminal
15
OSCIN
I
High speed system clock signal input terminal (7.92 MHz)
16
VCC1
-
Power supply terminal (+3.3V)
17
NMI
I
Non-maskable interrupt signal input terminal Fixed at “H” in this set
18
RC_IN1
I
Rotary remote commander shift key input terminal
19
BUIN
I
Back up power supply detection signal input terminal “L” is input at low voltage
20, 21
NCO
-
Not used
22
DEC_SI
I
Serial data input from the CD section
23
DEC_SCK
O
Serial data transfer clock signal output to the CD section
24
DEC_SO
O
Serial data output to the CD section
25, 26
NCO
-
Not used
27
DRV_ON
I
Power supply on/off control signal input terminal for the CD mechanism section
28
BEEP
O
Beep sound drive signal output to the power amplifi er
29
I2C_SCL
O
IIC serial clock signal output to the electrical volume and power amplifi er
30
I2C_SDA
I/O
IIC two-way serial data bus with the electrical volume and power amplifi er
31
FW_TXD
O
Flash writer data output terminal
32
FW_RXD
I
Flash writer data input terminal
33
FW_CLK
I
Flash writer clock signal output terminal
34
FW_BUSY
O
Flash writer busy signal output terminal
35 to 37
NCO
-
Not used
38
MEC_LOAD
O
Motor (Loading) signal output to the CD section
39
MEC_EJECT
O
Motor (Eject) signal output to the CD section
40
CDON_1500MV
O
CD servo power supply control signal output to the CD section
41
EPM
O
EPM signal output terminal Fixed at “L” in this set
42
MEC_INSW
I
Detection signal input from the CD section (in switch)
43
MEC_LIMIT
I
Detection signal input from the CD section (limit switch)
44
MEC_DSW
I
Detection signal input from the CD section (D switch)
45
DEC_INT
I
Request signal input from the CD section
46
CE
O
Chip enable signal output terminal Fixed at “H” in this set
47
HIT2_SDA
I/O
IIC two-way serial data bus with the FM/AM tuner unit
48
HIT2_SCL
O
IIC Serial data transfer clock signal output to the FM/AM tuner unit
49
HIT2_RESET
O
Reset signal output to the FM/AM tuner unit
50
DEC_XMUTE
O
Muting on/off control signal output to the CD section “L”: muting on
51
CD_ZDET
I
Zero detection signal input from the CD section
52
CD_XCCE
O
Chip enable signal output to the CD section
53
DEC_SSTBY
O
SRAM standby mode control signal output to the CD section
54
DEC_RST
O
Reset signal output to the CD section
55, 56
NCO
-
Not used
57
ACC_IN
I
Accessory power detection signal input terminal “L”: accessory power on
58
ATT
O
Muting on/off control signal output terminal “H”: muting on
59
DIAG
I
Diagnostic signal input from the power amplifi er
60
AMPSTB
O
Standby control signal output to the power amplifi er
61
NCO
-
Not used
62
VCC2
-
Power supply terminal (+3.3V)
63
NCO
-
Not used
64
VSS
-
Ground terminal
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